Eudialyte-group minerals are of scientific interest as important concentrators rare elements (mainly Zr and REE) in agpaitic alkaline rocks a potential source REE, Zr, Hf, Nb, Ta for industrial use. Extraction uranium(VI), thorium(IV), zirconium(IV), hafnium(IV), titanium(IV), scandium(III) by binary extractant based on 1,5-bis[2-(hydroxyethoxyphosphoryl)-4-ethylphenoxy]-3-oxapentane methyl tri...

The physiochemical properties of Nafion 115 and a composite Nafion 115/zirconium phosphate (∼25 wt.%) membranes are compared. The composite membrane takes up more water than Nafion at the same water activity. However, the proton conductivity of the composite membrane is slightly less than that for Nafion 115. Small angle X-ray scattering shows that the hydrophilic phase domains in the composite...

Nickel hexacyauoferrate films have been deposited on the surface of a microbaud gold electrode by cyclic voltammetry. Cyclic voltammograms of the resulting nickel hexacyauoferrate films indicate the presence of a couple of redox peaks which correspond to the hexacyanoferrate(II/III) redox couple. The nickel hexacyanoferrate modified microband gold electrode shows an excellent electrocatalytic a...

the purposes of this research were to the evaluation of resistance to nickel and cadmium in 52 indigenous and non-indigenous strains of contaminated soils and a study of growth promoting characteristics of some resistant isolates. resistance test at three levels of cadmium (0, 100, 200 mg l-1) and five levels of nickel (0, 250, 500, 750, 1000 mg l-1) in the framework of a completely randomized ...

Abstract The metal retention behaviors of several simulated radiolysis products on zirconium were investigated, and it was found that acid phosphate product HDEHP has the greatest effect. effects extraction nitric concentration, temperature behavior also investigated. results showed forms complexes with resulting in organic phase. Nitric concentration change morphology thus affecting behavior. ...